Regardless of what form symptoms take (SKIN RASH, tingling around the MOUTH, DIARRHEA), a type I hypersensitivity reaction is a systemic response-it affects and involves the body as a whole.
How to Read Your Eyeglass Prescription. The first step to understanding your eyeglass prescription is knowing what OD and OS mean. They are abbreviations for oculus dexter and oculus sinister, which are Latin terms for right eye and left eye.
Within the medical field, the individual is a Doctor of Optometry.    Within the sciences, OD refers to optical density. This is the ability of a solution or object to â¦absorb light.    OD can also be slang for overdose (in reference to drugs, whether legal or prescribed).